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September 29th, 2010, 01:37 PM
#1
#define question
1.I see in some classes, there are
#ifndef IPADD_H
#define IPADD_H
#endif
What is that #xxx for ?
2.I also see
#define something somethingelse-somethingelse-somethingelse-somethingelse-somethingelse-somethingelse-somethingelse-somethingelse-somethingelse-somethingelse-somethingelse-somethingelse-somethingelse-somethingelse-somethingelse...........
Very long, the whole screen
WHy should they define something like that ? When should we do so ?
Thank you
--Sunny Smile
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